Apparatus for treating paving-blocks.



G. E. FULLER.

APPARATUS FOR TREATING PAVING BLOCKS.

APPLICATION FILED JAN. 30, 1012.

,063,965. Patented June 10,1913.

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WITNESSES.-

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Patented June 10, 1913.

G. E. FULLER.

APPLICATION FILED JAN. 30, 1012.

,y ATTORNEY.

APPARATUS FOR TREATING PAVING BLOCKS.

W TNESSES:

CLA'U'D E. FULLER, OI BUFFALO, KANSAS.

APPARATUS FOR TREATING PAVING-BLOCKS.

Specification of Letters Patent.

Patented June 10, 1913.

Application filed January 30, 1912. Serial No. 674,261.

Y To all whom it may concern Be it known that I, CLAUD E. FULLER, a

citizen of the United, States, residin in Buifalo, in the county of Wilson and gtate of Kansas, have invented a certain new and useful Improvement in Apparatus for Treating Paving-Blocks, of which the following is a specification.

My invention relates to improvements in apparatus for treating paving blocks.

I have found that porous paving blocks, such as bricks, after having their pores filled with a filling material of an oily nature, such as bitumen in the form of liquid asphalt, are rendered much more desirable for paving purposes. Paving consisting of blocks so treated is very durable, is not liable to chi is comparatively noiseless and possesses ot er desirable qualities.

The object of this invention is to provide an efficient and novel apparatus by which i the paving blocks may have their pores thoroughly filled with the filling material.

The process herein described forms the subject matter of an application filed by me J an. 30, 1912, having S. No. 674,260, and en'- titled Process for treating paving block s.

In the accompanying drawings which illustrate my invention, Figure 1 is a view partly in elevation and partly in vertical section of the preferred form oi my invention. Fig. 23 s an enlarged vertical section on the line a kof Fig. 1. Fig. 3 is a horinontal sectional viewon the line 0-0? of Fig. 1. In this view the closuresjor the entrance and exit openings are shown in solid lines in the closed positions and in dotted lines in the open positions. Fig. 4 is a top view of one of the removable rails. Fig. 5 is a cross section on the line e--f of Fig. 3. I

Similar reference characters designate similar parts in the diflerent views.

1 designates a furnace having a stack 2 and a burner 3 of any suitable type. Extending through the furnace 1 is a treating chamber 4, preferably a hollow cylinder, slightly inclined from the horizontal and having at one end an entrance opening normally closed by a closure 5, which may be a hinged door having eripheral notches 6 for receiving pivoted lociing bolts 7 having nuts 8 adapted to bear against the outer side of the door or closure 5. The other end of the chamber 4 is also provided with an opening, the exit opening, normally closed by a closure 9, similar to the closure 5 and also having peripheral notches 6 for receiving pivoted bolts 7 provided with nuts 8.

A track extendsthrough the chamber -l and is provided with stationary rails 10 adapted to.support the wheels of cars 11 which are designed to support the paving blocks 12 which are to be treated in the chamber 4. The track is provided at oppo site ends of the chamber 4 with removable rails 13, which are removed in order that the doors or closures 5 and 9 may be closed and opened.

Located higher than the chamber 4 is a supply tank 14, which is adapted to contain the filling material. The tank 14 is mounted on a furnace 15, which is provided with a burner 16 of any suitable type. A conductor 17 connected at one end to the bottom of the tank 14 is connected at its other end to the chamber 4. In the conductor 17 is provided a shut off valve 18.

Located lower than the chamber 4 u n a furnace 19 is a drain receptacle 20, which is connected to the lower end of a conductor 21, the upper end of which is connected to the bottom of the chamber 4 near the lower or exit end thereof. The furnace 19 is provided with a burner 22 of any suitable type. In the conductor 21 is provided a shut off valve 23.

The furnace 15 is connected by a smoke pipe 24 with the stack 2. A smoke pipe 25 simllarly connects the furnace 19 with the stack 2.

An air compressor 26, of any suitable ty e, and operated in any suitable manner by mechanism not shown, is connected by a conductor 27 with the chamber 4. In the conductor 27 is located a shut off valve 28.

ressure gage of any suitable type and designated by 29 may also be connected with the conductor 27 between the valve 28 and the chamber 4.

The chamber 4, tank 14, and receptacle 20 are provided respectively with thermometers 30, 31 and 32 for ascertaining the interior temperature of said vessels. 7

A safety valve 33 is provided in the chamber 4. A safety valve 34 may also be provided in the conductor 21 between the valve 23 and the receptacle 20.

A conductor 35 has its lower end connected to the bottom of the receptacle 20 and its upper end is disposed so as to discharge,

into the tank 14.

A conductor 36 connects the receptacle 20 and the air compressor 26. A shut ofi valve 37 may be located in the conductor 36.

A vacuum pump 38 of any suitable type and operated by any suitable means, not shown, is connected to one end of a conductor 39, the other end of which is connected to the upper side of the chamber 4. In the conductor 39 may be located a shut off valve 40. Preferably the conductor 39 has a coiled portion 41 located in a tank 42, which may be supplied with water from a water pipe 43.

In the operation of my invention, the nuts 8 on the bolts 7 which hold the door 5 closed, are loosened, and the bolts are swung from the notches 6, thereby releasing the door 5. The door 5 is then swung to the open position-shown in dot-ted lines in Fig. 3, and the removable rails 13 placed in alinement with the rails 10; Thecars 11 loaded with the .blocks 12 which are to be treated, are run on -the track into the treating chamber 4.. The removable rails 13 are then removed and the door 5 is closed and locked by swinging into the notches 6 the bolts 7, the nuts 8 being turned so as to clamp the door 5 tightly in its closed position. It will be understood that the door 9 is in the closed position. The valve 40 is opened and the valves 18, 23 and v 28 are closed. The burner 3 is operated in the furnace 1 so as to heat the interior of the chambr 4 to about 300 degrees Fahrenheit. The vacuum pump 38 is then operated to exhaust the air from the chamber 4, the air passing through the coil 41 being cooled thereby so as not to inju'riously afiect the pump. After the air has been sufiiciently exhausted from, the chamber 4, the valve 40 is closed. In the meantime'the filling material, such as asphalt, has been placed in the tank 14 and the burner 16 has been operated so as to heat the tank 14 sufiiciently to melt the asphalt held therein. The interior of the tank 14 is preferably heated to a temperature of about 300 degrees Fahrenheit, the temperature required depending upon the material which is to be melted. The valve 18 is then opened, thus permitting the liquid asphalt to run through the conductor 17 from the tank 14 into the chamber 4. Sutlicient filling material is permitted to enter the chamber 4 to submerge the blocks 12, which are held therein upon the cars 11. en the pump 38 exhausted the air from the chamber '4, the (air in the pores of the blocks 12 was also exhausted was to efi'ect a partial vacuum in said pores. After the blocks 12 have'been submer ed, the filling liquid will enter the pores oi the blocks. In order that the pores may be more completely filled with the fillmg material, the valve 18 is closedand the valve 28 openedl The air com ressor 26 is then operated and air is forced y said compressor through the conductor 27 into the chamber 4. The increased pressure in the chamber due to the air being pumped therein aoeaeea from the compressor 26 will force more filling liquid into the pores of the'blocks 12, the small amount of air which has remained inthe pores after the exhausting operation being compressed into smaller space by the liquid entering'the pores of the blocks under compression. The valve 23 is then opened so as to permit the excess filling liquid to pass from the chamber 4- through the conductor 21 into the drain receptacle 20. At-

ter the excess has been ejected from the chamber 4, the valve 23 is again closed, the compressor 26 being operated meanwhile so as to prevent the small amount of air which is compressed and which still remains in the pores of the blocks, from expanding and forcing any of the filling liquid from the pores.

tained in the chamber 4 b the operation of the compressor 26 until t eufilling material has hardened in the pores of the blocks 12. When the blocks 12 have cooled suficiently, the door 9 is opened, the removable rails 13 placed in alinement with the rails 10 at that end of the chamber 4, and the cars 11, with the blocks 12 removed from the chamber. In the meantime, the burner 22 may be operated so as to heat the-receptacle 20 to about 300 degrees Fahrenheit, thus retaining the filling material in said receptacle in a liquid condition. The valve 37 is then opened, so as to permit compressed air, from the comressor 26 to pass through the conductor 36 into the receptacle 20 and above the filling material in said receptacle. The pressure thus produced in the receptacle 20 above the liquid asphalt therein will force the asphaltfrom the receptacle 20' through the conductor 35 into the supply tank 14.

The valves 28 and 37 and closure 9 may be closed, the closure 5 opened, more cars loaded with the hereinbefore described operations repeated.

blocks run into chamber 4 and I The chamber 4 and. blocks 12 are then'permitted to cool, the pressure being re-' The chamber 4 is preferably downwardly inclined toward the em't end thereof, as shown, to enable the cars being easily run into and from said chamber.

The blocks which have been treated in the manner described will be more completely impregnated with the filling material than would be possible by merely immersing the blocks in the filling material.

Bricks treatedin the manner hereinbefore described will have great durability, are not permeable to moisture, and a paving made of them will be comparatively noise less under trafic.

I do not limit my ture shown and described, as modifications of my pended claims, may be made without e partin from'the spirit of my invention.

invention, within the scope of the a invention to the strum 1 secure by Letters connecting the compressor and the receptacle, and a conductor connecting the receptacle and the tank.

2. In an apparatus for treating paving blocks; an immersing chamber for receiving the blocks, a supply tank and a drain receptacle disposed respectively hi her and lower than the chamber, two conductors respectively connecting the chamber with the tank and receptacle, a vacuum pump, an air compressor, two conductors respectively connecting the chamber with the compressor and the pump, and shut off valves located respectively in said conductors.

3. In an apparatus for treating paving blocks, an immersing chamber for receiving the blocks, means for heating the chamber, a tank located higher than the chamber, means for heating the tank, a drain receptacle located lower than the chamber, means for heating the receptacle, two conductors respectively connecting the chamber with said tank and recepacle, a vacuum pump, a conductor connecting the pump and chamher, and shut off valves located respectively in said conductors.

4. In an apparatus for treating paving blocks, an immersing-chamber for receiving the blocks, means for heating the chamber, a tank located higher than the chamber, means for heating the tank, a drain receptacle located lower than the chamber, means for heating the receptacle, a vacuum pump, an air compressor, conductors respectively connecting the chamber with the tank, receptacle, compressor and pump, andshut ofi valves located respectively in said conductors.

5. In an apparatus for treating paving blocks, an immersing chamber for receiving the blocks, means for heating the chamber, a tank located higher than the chamber, means for heating the tank, a drain receptacle located lower than the chamber, means for heating the receptacle, a vacuum pump, an. air compressor, conductors respectlvely connecting the chamber with the tank, re ceptacle, compressor and pump, shut ofl valves located respectively in said conductors, and two conductors respectively connecting the receptacle with the compressor and tank.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEO. LANDRITH, A. H. LYONS. 

